Filled with curiosity, she turned over the envelope in her small hands, and saw a smudged stamp of the Hogwarts crest on the other side. 

Her heart skipped a beat.

Charlotte stood alone for a moment in the now deserted corridor, when she heard a muffled sniff issue from a broom cupboard behind her. 

She edged towards it, and on placing her ear to the wooden floor she heard a soft crinkling of paper, followed by a few more successive sniffs.

Curiosity getting the better of her, Charlotte carefully opened the door and poked her head in. Curled up amongst the mops and buckets, was a mousy-haired Teddy Lupin.

“Hi guys.” Charlotte said, standing up and finding herself looking out for the Weasleys for the second time that day. “How was your summer?” She said, as nonchalantly as possible, trying to ignore the fact that everyone’s eyes were now on her.